Question

calcule o valor das espressoes -2 chaves -1 colchetes5-3×(10 1):3 colchetes-5×7chaves

Answer 1

{-2-1[5-3x(10-1):3]-5x7}
{-2-1[5-3x9:3]-5x7}
{-3[5-3x3]-5x7}
{-3[5-9]-5x7}
-3-4-35= -42